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William J. Broad  GARDENS OF EDEN 
Exploring the deep sea -- on Earth and on Europa -- with William Broad 
June 16, 1997
 



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Questions answered in this forum: 
Could extraterrestrial life be formed from material other than carbon?
Could probes contaminate extraterrestrial ecosystems?
How can deep-sea creatures survive the high pressures?
Where else could extraterrestrial life exist in the solar system.
Is the jury still out on life on Mars?
Are there plans to find life on Europa?
Did life on Earth begin on the bottom of the sea?

NewsHour Backgrounders 
June 10, 1997:
 
A Gergen dialogue with William Broad about his book "The Universe Below." 
April 10, 1997:
 
NASA scientists explain the findings from Europa
Browse the NewsHour's science coverage.
 
Outside Links 
Browse stories from the New York Times by William J. Broad and others on Europa. (note: free, but registration is required.
Browse Simon & Schusters' page on "The Universe Below: Discovering the Secrets of the Deep Sea."
 
 
The Online NewsHour asks: 
There was much fanfare when it was announced that a meteorite from Mars was found on Earth containing what some say were signs of extraterrestrial life.  Alternative explanations for those signs, however, have been forwarded.  What is the current state of research on the meteorite?  Is the jury still out? 

William Broad responds: 
Yes. The debate rages on, and might for years. There seems to be no easy way to render a definitive judgement. Since the study was published in Science magazine last summer, a dozen or so scientific papers have been presented, both for and against the fossil-life hypothesis. Richard Zare, a chemist at Stanford University who is one of the original authors, recently said that the new supporting evidence that has been gathered slightly outweighs the criticisms. But at the same time, he said he knew of no research likely to settle the question once and for all. For a skeptical view of all this, see Charles Petit, "Pieces of the Rock," in the April/May issue of Smithsonian 
Air & Space magazine. "Most meteorite experts," the article says, "think last summer's 'discovery' of Martian life was just a load of hype." 

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